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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/color/bcolor.hxx>
#include <vcl/bitmapex.hxx>
// GridPrimitive2D class
namespace drawinglayer::primitive2d
{
/** GridPrimitive2D class
This primitive is specialized to Grid visualisation. The graphic definition
(Transform) contains the whole grid area, but will of course be combined
with the visible area (Viewport) when decomposed. Also a resolution-dependent
point reduction is used to not create too much grid visualisation data. This
makes this primitive highly view-dependent and it dynamically buffers
the last decomposition dependent from the Viewport used.
*/
class DRAWINGLAYER_DLLPUBLIC GridPrimitive2D final : public BufferedDecompositionPrimitive2D
{
private:
/// The geometry definition for the grid area
basegfx::B2DHomMatrix maTransform;
/// grid layout definitions
double mfWidth;
double mfHeight;
double mfSmallestViewDistance;
double mfSmallestSubdivisionViewDistance;
sal_uInt32 mnSubdivisionsX;
sal_uInt32 mnSubdivisionsY;
/// Grid color for single-pixel grid points
basegfx::BColor maBColor;
/// The Bitmap (with transparence) for grid cross points
BitmapEx maCrossMarker;
/** the last used object to view transformtion and the last Viewport,
used from getDecomposition for decide buffering
*/
basegfx::B2DHomMatrix maLastObjectToViewTransformation;
basegfx::B2DRange maLastViewport;
/// create local decomposition
virtual void create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const override;
public:
/// constructor
GridPrimitive2D(
const basegfx::B2DHomMatrix& rTransform,
double fWidth,
double fHeight,
double fSmallestViewDistance,
double fSmallestSubdivisionViewDistance,
sal_uInt32 nSubdivisionsX,
sal_uInt32 nSubdivisionsY,
const basegfx::BColor& rBColor,
const BitmapEx& rCrossMarker);
/// data read access
const basegfx::B2DHomMatrix& getTransform() const { return maTransform; }
double getWidth() const { return mfWidth; }
double getHeight() const { return mfHeight; }
double getSmallestViewDistance() const { return mfSmallestViewDistance; }
double getSmallestSubdivisionViewDistance() const { return mfSmallestSubdivisionViewDistance; }
sal_uInt32 getSubdivisionsX() const { return mnSubdivisionsX; }
sal_uInt32 getSubdivisionsY() const { return mnSubdivisionsY; }
const basegfx::BColor& getBColor() const { return maBColor; }
const BitmapEx& getCrossMarker() const { return maCrossMarker; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
/// get 2d range
virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
/// provide unique ID
virtual sal_uInt32 getPrimitive2DID() const override;
/// Override standard getDecomposition to be view-dependent here
virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
};
} // end of namespace drawinglayer::primitive2d
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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